阅读说明：本技术 一种功能性透气复合膜的制备工艺 (A kind of preparation process of functionality breathable composite film ) 是由 胡立江 王锐 程亮 于 2019-08-28 设计创作，主要内容包括：本发明公开了一种功能性透气复合膜的制备工艺,包括透气膜及无纺布,将碳酸钙、PE、抗氧剂及色母粒按一定的配比量搅拌混合,搅拌时间为18-20分钟；通过二次塑化装置,将搅拌后的混合物通过二次塑化装置造粒；通过二次塑化装置造粒后经过流延机制膜；将流延机制成的膜通过三级拉伸,以使膜上形成纳米级微孔；在经过三级拉伸后的膜表面通过网纹辊涂上硅油,对膜上的微孔进行局部覆盖；将经过硅油覆盖的膜进行烘干保温,所述烘干温度设定为60℃；所述无纺布通过网纹辊进行均匀上胶,将上完胶的无纺布与烘干完的膜滚压为一体,并通过保温室保温之后进行收卷,所述保温室的温度设定为160℃,通过上述设置,能产出透湿量较小、透气更均匀的透气复合膜。(The invention discloses a kind of preparation processes of functional breathable composite film, including ventilated membrane and non-woven fabrics, and calcium carbonate, PE, antioxidant and Masterbatch are stirred by certain proportional quantity, and mixing time is 18-20 minutes；By secondary plasticizing device, the mixture after stirring is granulated by secondary plasticizing device；By being cast mechanism film after being granulated by secondary plasticizing device；Film made of casting machine is stretched through three-level, so as to be formed on film nanometer level microporous；Silicone oil is coated by anilox roll in the film surface after three-level stretches, partial mulching is carried out to the micropore on film；Drying heat preservation will be carried out by the film of silicone oil covering, the drying temperature is set as 60 DEG C；The non-woven fabrics is uniformly glued by anilox roll, the non-woven fabrics of upper complete glue is integrated with the film rolling dried, and by being wound after moist closet heat preservation, the temperature of the moist closet is set as 160 DEG C, it, can output vapor transfer rate be smaller, ventilative breathable composite film more evenly by above-mentioned setting.)

1. a kind of preparation process of functionality breathable composite film, it is characterised in that: including ventilated membrane and non-woven fabrics,

The production technology of the ventilated membrane the following steps are included:

Step 1: calcium carbonate, PE, antioxidant and Masterbatch being stirred by certain proportional quantity, mixing time is 18-20 points Clock, the accounting of calcium carbonate is 48%-50% in the ventilated membrane, and the accounting of PE is 49%-51%, and the accounting of antioxidant is 0.3%, the accounting of Masterbatch is 0.7%；

Step 2: by secondary plasticizing device, the mixture after stirring being granulated by secondary plasticizing device；

Step 3: by being cast mechanism film after being granulated by secondary plasticizing device；

Step 4: film made of casting machine being stretched through three-level, so as to be formed on film nanometer level microporous；

Step 5: silicone oil being coated by anilox roll in the film surface after three-level stretches, part is carried out to the micropore on film and is covered Lid, so that the area of the micropore on film is more uniform；

Step 6: drying heat preservation will be carried out by the film of silicone oil covering, the drying temperature is set as 60 DEG C；

Step 7: the non-woven fabrics is uniformly glued by anilox roll, is with the film rolling dried by the non-woven fabrics of upper complete glue One, and by being wound after moist closet heat preservation, the temperature of the moist closet is set as 160 DEG C.

2. a kind of preparation process of functional breathable composite film according to claim 1, it is characterised in that: described is secondary Plasticizing apparatus includes the extruding box (1) set gradually from left to right, transmission case (2) and hydraulic device (3), the extruding box (1) Two extrusion screw rods (11) for being located at same level are inside equipped with, extrusion screw rod (11) includes for squeezing out mixture to the left The peripheral wall of first spire (111), the extrusion screw rod (11) is equipped with and oppositely oriented second spire of the first spire (111) (112) and second spire (112) is staggered with the first spire (111), and the second spire (112) protrusion squeezes Out the distance of screw rod (11) be the distance that the first spire (111) protrude extrusion screw rod (11) one third to 2/3rds, The right end of the extrusion screw rod (11) passes through to be connected to hydraulic device (3) in transmission case (2), and the extrusion screw rod (11) is equipped with the One driving cog (113), the transmission case (2) is interior to be equipped with the second driving cog (21) engaged with two the first driving cogs (113), The transmission case (2) is equipped with the driving device (4) of driving the second driving cog (21) rotation, and the right end of the extruding box (1) is set Have feed end (12), the left end of the extruding box (1) is equipped with discharge end (13), and the upper end of the extruding box (1) is equipped with heating dress Set (14).

3. a kind of preparation process of functional breathable composite film according to claim 2, it is characterised in that: the driving dress Setting (4) includes driving motor (41) and the speed reducer (42) for connecting driving motor (41), the output shaft of the speed reducer (42) (421) it being radially provided on swinging plate (422), the upper surface of the transmission case (2) is set there are two spaced mounting rack (5), It is detachably equipped with fixed link (51) on the mounting rack (5), it is rotatable on the fixed link (51) to be equipped with wraping plate (52), it is described Wraping plate (52) is equipped with close to the side of swinging plate (422) positioned at the lower end of swinging plate (422), and the peripheral wall of the feed end (12) connects It is connected to elastic piece (121), the wraping plate (52) is located at the lower end of elastic piece (121) close to the one end of elastic piece (121), described solid Be arranged in fixed pole (51) torsional spring (53), the middle part of the torsional spring (53) is located at the upper end of wraping plate (52), two mounting racks (5) it is interior Side is symmetrically arranged with gag lever post (54), and one end of the gag lever post (54) is equipped with the anti-delinking part (55) upwardly extended, the torsional spring (53) the corresponding upper end for being resisted against gag lever post (54) in end.

Technical field

The present invention relates to the technical field of breathable composite film, in particular to a kind of preparation work of functional breathable composite film Skill.

Background technique

Breathable composite film has the characteristic of ventilating water proof, is a kind of functional material, also referred to as " film that can be breathed ", It is usually applied to not only require occasion that is ventilative but also requiring waterproof.Currently, ventilated membrane is in health, medicine, building, automobile and sport fortune It is widely applied in industry of starting building, is related to baby diaper, adult incontinence pants and nursing materials and woman with its product produced Female's amenities；Medical protection articles, the antianaphylactic bedding of hospital；Protective clothes, work clothes and its lining material；Room Push up protective materials and breathable waterproof material etc..

While the demand of ventilated membrane is growing, people increasingly pay attention to the quality of ventilated membrane, but at present Technique production production ventilated membrane there are vapor transfer rates larger, non-uniform problem of breathing freely.

Summary of the invention

The object of the present invention is to provide a kind of preparation process of functional breathable composite film, energy output vapor transfer rate is smaller, saturating The breathable composite film of gas more evenly.

Above-mentioned technical purpose of the invention has the technical scheme that a kind of functional breathable composite film Preparation process, including ventilated membrane and non-woven fabrics, the production technology of the ventilated membrane the following steps are included:

Step 1: calcium carbonate, PE, antioxidant and Masterbatch being stirred by certain proportional quantity, mixing time 18- 20 minutes, the accounting of calcium carbonate was 48%-50% in the ventilated membrane, and the accounting of PE is 49%-51%, and the accounting of antioxidant is 0.3%, the accounting of Masterbatch is 0.7%；

Step 2: by secondary plasticizing device, the mixture after stirring being granulated by secondary plasticizing device；

Step 3: by being cast mechanism film after being granulated by secondary plasticizing device；

Step 4: film made of casting machine being stretched through three-level, so as to be formed on film nanometer level microporous；

Step 5: silicone oil being coated by anilox roll in the film surface after three-level stretches, part is carried out to the micropore on film Covering, so that the area of the micropore on film is more uniform；

Step 6: drying heat preservation will be carried out by the film of silicone oil covering, the drying temperature is set as 60 DEG C；

Step 7: the non-woven fabrics is uniformly glued by anilox roll, and the non-woven fabrics of upper complete glue is rolled with the film dried Consolidation, and by being wound after moist closet heat preservation, the temperature of the moist closet is set as 160 DEG C.

Further, the secondary plasticizing device includes the extruding box set gradually from left to right, transmission case and hydraulic Device, is equipped with two extrusion screw rods for being located at same level in the extruding box, extrusion screw rod include for by mixture to First spire of left extrusion, the peripheral wall of the extrusion screw rod are equipped with and oppositely oriented second spire of the first spire and described Second spire is staggered with the first spire, and the distance of the second spire protrusion extrusion screw rod is that the first spire is convex To 2/3rds, the right end of the extrusion screw rod is connected to hydraulic the one third of the distance of extrusion screw rod in transmission case out Device, the extrusion screw rod are equipped with the first driving cog, are equipped with second engaged with two the first driving cogs in the transmission case Driving cog, the transmission case are equipped with the driving device of driving the second driving cog rotation, and the right end of the extruding box is equipped with charging End, the left end of the extruding box are equipped with discharge end, and the upper end of the extruding box is equipped with heating device.

Further, the driving device includes the speed reducer of driving motor and connection driving motor, the speed reducer It is radially provided with swinging plate on output shaft, the upper surface of the transmission case sets that there are two spaced mounting rack, the mounting racks On fixed link is detachably installed, rotatable in the fixed link to be equipped with wraping plate, the wraping plate is equipped with close to the side of swinging plate Positioned at the lower end of swinging plate, the peripheral wall of the feed end is connected with elastic piece, and the wraping plate is located at bullet close to one end of elastic piece The lower end of property piece is arranged with torsional spring in the fixed link, and the middle part of the torsional spring is located at the upper end of wraping plate, the inside of two mounting racks It is symmetrically arranged with gag lever post, one end of the gag lever post is equipped with the anti-delinking part upwardly extended, and the end correspondence of the torsional spring is resisted against The upper end of gag lever post.

In conclusion the invention has the following advantages:

1. a kind of preparation process of functionality breathable composite film, calcium carbonate, PE, antioxidant and Masterbatch are matched by certain Proportion is stirred, and is granulated into the plasticizing of secondary plasticizing device is crossed, with the film of micropore made of casting machine, by three-level stretch with Keep the area of micropore longitudinal section more uniform, coating silicone oil for partial mulching in film surface by anilox roll is micropore so that micro- The area of the cross section in hole is more uniform, and then the ventilative more uniform and vapor transfer rate of the ventilated membrane is smaller；

2. the extrusion screw rod is equipped with the first spire for squeezing out mixture to the left and interlocks with the first spire Be arranged and the second oppositely oriented spire, by adding the second spire, make mixture under the driving of the second spire to the right Squeeze, sufficiently squeeze with the mixture that is squeezed to the left by the first spire and mix so that calcium carbonate be sufficiently mixed with PE and Mixing more uniformly, and then obtains more closely knit smooth full mixture, the second spire protrusion extrusion screw rod away from From the one third protruded for the first spire with a distance from extrusion screw rod to 2/3rds, so that the mixture is in trend to the left It is lower that discharge end is squeezed out by the first spire, while can be pushed to the left two extrusion screw rods simultaneously by hydraulic device, and then right Mixture is sheared so that mixed dispersion is more uniform；

3. the output shaft rotation of the driving motor driving speed reducer drives swinging plate to rotate clockwise, swinging plate drive is stuck up Plate is downward close to one end of swinging plate, so that the other end of wraping plate beats the elastic piece on feed end upwards, when swinging plate bypasses When wraping plate, the wraping plate restores under the twisting force of torsional spring to original position, in Recovery Process, wraping plate close to one end of elastic piece to Under beat elastic piece；When swinging plate rotates a circle, wraping plate beats elastic piece twice, and then by feed end and extruding box peripheral wall adhesion Mixture abate, on the one hand avoid causing mixture because the calcium carbonate of powdery is adhered to the peripheral wall of feed end and extruding box Proportion inaccuracy, on the other hand avoids the carbonic acid lid because of powdery from being constantly piled up in the peripheral wall of feed end and extruding box, in turn results in Mixture residual, if cleaning influences subsequent operation not in time, and residue accumulation for a long time cause it is rotten equally influence it is subsequent mixed Close the mixing of object.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention；

Fig. 2 is cross section view of the invention；

Fig. 3 is top view of the invention；

Fig. 4 is enlarged drawing at A of the invention.

In figure: 1, extruding box；11, extrusion screw rod；111, the first spire；112, the second spire；12, feed end； 121, elastic piece；13, discharge end；14, heating device；113, the first driving cog；2, transmission case；21, the second driving cog；3, hydraulic Device；4, driving device；41, driving motor；42, speed reducer；421, output shaft；422, swinging plate；5, mounting rack；51, fixed Bar；52, wraping plate；53, torsional spring；54, gag lever post；55, anti-delinking part.

Specific embodiment

The present invention will be further described below with reference to the drawings.

As shown in Figs 1-4, a kind of preparation process of functional breathable composite film, including ventilated membrane and non-woven fabrics, this is ventilative The production technology of film the following steps are included:

Step 1: calcium carbonate, PE, antioxidant and Masterbatch being stirred by certain proportional quantity, mixing time 18- 20 minutes, the accounting of calcium carbonate was 48%-50% in the ventilated membrane, and the accounting of PE is 49%-51%, and the accounting of antioxidant is 0.3%, the accounting of Masterbatch is 0.7%；

Step 2: by secondary plasticizing device, the mixture after stirring being granulated by secondary plasticizing device；

Step 3: by being cast mechanism film after being granulated by secondary plasticizing device；

Step 4: film made of casting machine being stretched through three-level, so as to be formed on film nanometer level microporous；

Step 5: silicone oil being coated by anilox roll in the film surface after three-level stretches, part is carried out to the micropore on film Covering, so that the area of the micropore on film is more uniform；

Step 6: drying heat preservation will be carried out by the film of silicone oil covering, the drying temperature is set as 60 DEG C；

Step 7: the non-woven fabrics is uniformly glued by anilox roll, and the non-woven fabrics of upper complete glue is rolled with the film dried Consolidation, and by being wound after moist closet heat preservation, the temperature of the moist closet is set as 160 DEG C.

A kind of preparation process of functionality breathable composite film, presses certain proportion for calcium carbonate, PE, antioxidant and Masterbatch Amount is stirred, and is granulated into the plasticizing of secondary plasticizing device is crossed, with the film of micropore made of casting machine, stretched by three-level so that The area of micropore longitudinal section is more uniform, and coating silicone oil for partial mulching in film surface by anilox roll is micropore so that micropore Cross section area it is more uniform, and then the ventilated membrane it is ventilative more uniformly and vapor transfer rate it is smaller.

The secondary plasticizing device includes the extruding box 1 set gradually from left to right, transmission case 2 and hydraulic device 3, institute State and be equipped with two extrusion screw rods 11 for being located at same level in extruding box 1, extrusion screw rod 11 include for by mixture to the left The peripheral wall of the first spire 111 squeezed out, the extrusion screw rod 11 is equipped with and oppositely oriented second spire of the first spire 111 112 and second spire 112 be staggered with the first spire 111, second spire 112 protrudes extrusion screw rod 11 Distance be the distance that the first spire 111 protrudes extrusion screw rod 11 one third to 2/3rds, the extrusion screw rod 11 Right end pass through in transmission case 2 and be connected to hydraulic device 3, the extrusion screw rod 11 is equipped with the first driving cog 113, the transmission case The second driving cog 21 engaged with two the first driving cogs 113 is equipped in 2, the transmission case 2 is equipped with the second transmission of driving The driving device 4 that tooth 21 rotates, the right end of the extruding box 1 are equipped with feed end 12, and the left end of the extruding box 1 is equipped with discharge end 13, the upper end of the extruding box 1 is equipped with heating device 14.

The extrusion screw rod 11 be equipped with the first spire 111 for squeezing out mixture to the left and with the first spire 111 are staggered and the second oppositely oriented spire 112 makes mixture in the second spiral by adding the second spire 112 Portion 112 squeezes to the right under driving, and sufficiently extruding is carried out with the mixture squeezed to the left by the first spire 111 and is mixed, so that carbon Sour calcium is sufficiently mixed with PE and mixes more uniformly, and then obtains more closely knit smooth full mixture, second spiral It is the one third for the distance that the first spire 111 protrudes extrusion screw rod 11 to three points that the distance of extrusion screw rod 11 is protruded in portion 112 Two so that the mixture squeezes out discharge end 13 by the first spire 111 under trend to the left, while hydraulic device can be passed through 3 push two extrusion screw rods 11 to the left simultaneously, and then are sheared to mixture so that mixed dispersion is more uniform.

The driving device 4 includes the speed reducer 42 of driving motor 41 and connection driving motor 41, the speed reducer 42 It is radially provided with swinging plate 422 on output shaft 421, the upper surface of the transmission case 2 sets that there are two spaced mounting rack 5, institutes It states and fixed link 51 is detachably installed on mounting rack 5, locking nut is equipped on the outside of the both ends of the mounting rack 5, for fixed solid Fixed pole 51, rotatable in the fixed link 51 to be equipped with wraping plate 52, the wraping plate 52 is equipped with to be located at close to the side of swinging plate 422 and dial The lower end of movable plate 422, the peripheral wall of the feed end 12 are connected with elastic piece 121, and the wraping plate 52 is close to one end of elastic piece 121 Positioned at the lower end of elastic piece 121, torsional spring 53 is arranged in the fixed link 51, the middle part of the torsional spring 53 is located at the upper of wraping plate 52 End, the inside of two mounting racks 5 are symmetrically arranged with gag lever post 54, and one end of the gag lever post 54 is equipped with the anti-delinking part 55 upwardly extended, The corresponding upper end for being resisted against gag lever post 54 in the end of the torsional spring 53.

The driving motor 41 drives the rotation of output shaft 421 of speed reducer 42 that swinging plate 422 is driven to rotate clockwise, and stirs Plate 422 drives wraping plate downward close to one end of swinging plate 422, so that the other end of wraping plate 52 beats the bullet on feed end 12 upwards Property piece 121, when swinging plate 422 bypass wraping plate 52 when, the wraping plate restores under the twisting force of torsional spring 53 to original position, replys Cheng Zhong, wraping plate 52 beat downwards elastic piece 121 close to one end of elastic piece 121；When swinging plate 422 rotates a circle, wraping plate 52 is struck It buys elastic piece 121 twice, and then by the mixture abate of 1 peripheral wall adhesion of feed end 12 and extruding box, on the one hand avoids because of powdery Calcium carbonate be adhered to the peripheral wall of feed end 12 and extruding box 1 and cause mixture proportion inaccuracy, on the other hand avoid because The carbonic acid lid of powdery is constantly piled up in the peripheral wall of feed end 12 and extruding box 1, mixture residual is in turn resulted in, if clearing up not in time Subsequent operation is influenced, and residue accumulation for a long time causes the rotten same mixing for influencing subsequent mixtures.

The vapor transfer rate experimental implementation sequence that the functionality breathable composite film implements analytical unit time moisture is as follows:

Wherein:

1.1 moisture permeabilitys: indicate that for moisture content through the amount of the film of 1 ㎡ area, unit is g/ ㎡ within certain unit time day；

1.2 survey moisture permeability testing machines: temperature-adjustable and relative humidity；

1.3 temperature: surveying the temperature in moisture permeability testing machines, with a DEG C label；

1.4 relative humidity: it relative to the humidity of temperature, is marked with %；

1.5 moisture vapor transmission cups: the cup used when measurement moisture permeability；

1.6 moisture vapor transmission cup fixed frames: the frame used when sample is fixed on moisture vapor transmission cup；

1.7 distilled water: by the water of distillation process；

2 safety

It to prevent from being scratched by blade when 2.1 cutting sample；

2.2 prevent sensing impaired when taking, putting sample；

3 measurement equipments

3.1 survey moisture permeability testing machines；

Frame (10cm × 10cm) is used in the cutting of 3.2 samples；

Knife is used in the cutting of 3.3 samples；

3.4 moisture vapor transmission cups (diameter: 6.08cm, deep: 5.0cm)；

3.5 moisture vapor transmission cup fixed ring, moisture vapor transmission cup fixing clamp；

3.6 distilled water.

4 preparation of samples

4.1 breathable films or the product compound with breathable film are with the preparation of the direction CD；

4.2 cut cutting sample with sample.

5 prepare equipment

5.1, which open machine, surveys moisture permeability testing machines power supply；

The setting value of 5.2 machines, which is set to, meets measured experiment:

1. temperature: 40 DEG C of 2. relative humidity: 60%

5.3 temperature and relative humidity stabilization need be 2 hours or so time.

6 measurements sequence

1) 100g distilled water is put into moisture vapor transmission cup；

2) it is placed on moisture vapor transmission cup sample is average；

3) moisture vapor transmission cup fixed ring is placed on moisture vapor transmission cup；

4) it is fixed at three with moisture vapor transmission cup fixing clamp；

5) it is put into and surveys moisture permeability testing machines；

6) after 1 hour electronic scale (0.01g) measurement moisture vapor transmission cup weight (W0)；

7) it is placed again into after measuring and surveys moisture permeability testing machines；

8) moisture vapor transmission cup is taken out after 24 hours, is measured weight (W1), and moisture permeability is calculated.

7 moisture permeability calculation methods

The weight gain after weight W1 (g): 24 hours after WO (g): 1 hour: W1-WO

Area (m²): the surface area (π × lay-flat width2) of moisture vapor transmission cup entrance

Area=π × lay-flat width2=π × (3.04cm) 2=29.019

Unit changes m into²

Area=29.019cm2 × (1m²÷ 10000cm2)=0.00290m²

∴ WVTR (moisture permeability)=incrementss ÷ area=(incrementss ÷ 0.00290m2) × (24 ÷ minute)

=(incrementss ÷ minute) × 8276

8 results

The result record that 8.1 experiments obtain.

The vapor transfer rate test result of ventilated membrane produced by the present invention

Serial number	Weight before testing	Weight after test	Evaporation capacity	Test period	Vapor transfer rate
						1	338.87	338.77	0.1	4	206
2	352.4	352.33	0.07	4	144
						3	349.08	349	0.08	4	165
4	340.79	340.73	0.06	4	124
						5	338.79	338.71	0.08	4	165
6	354.88	354.82	0.06	4	124
						7	350.53	350.46	0.07	4	144
8	340.87	346.81	0.06	4	124
						9	348.52	348.46	0.06	4	124
Average value	346.08	346.67	0.07	4	146
It is put into the time	11:22	Take-off time	15:22

The vapor transfer rate test result of ventilated membrane in the market

Serial number	Weight before testing	Weight after test	Evaporation capacity	Test period	Vapor transfer rate
						1	304.2	312.4	1.8	4	423
2	313.6	312.3	1.3	4	305
						3	343.5	341.7	1.8	4	423
4	338.7	335.1	3.6	4	847
						5	332.5	331.5	1	4	235
6	331.2	327.8	3.4	4	800
						7	358.7	356	1.7	4	400
8	327.4	324.2	3.2	4	752
						9	325.4	322.8	2.6	4	611
10	339.4	335.4	4	4	941
						Average value	331.5	329.9	2.44	4	574
						It is put into the time	11:22	Take-off time	15:22

By the above multiple groups test data, the vapor transfer rate for showing ventilated membrane produced by the present invention is smaller.

The above description is only a preferred embodiment of the present invention, thus it is all according to the configuration described in the scope of the patent application of the present invention, The equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.